Symbol Library

Solid State - Reference to semiconductor components or circuits that use semiconductor components that have no moving parts, such as diodes and transistors.

Switch - A component used to control an electric circuit. It can close or open a circuit.

Systems - The electrical components, circuits, and connections that deliver power to perform tasks.

Terminal - An electrical connection point on an electrical component.

Thermal Switch - A switch that activates at a set temperature.

Transistor - A semiconductor component used in electric lift trucks as an electronic switch. A transistor most often has three terminals: a base (B), a collector (C),and an emitter (E). The main current flow is between the collector and the emitter. The main current flow is controlled by a much smaller current flow between the base and emitter.

Turn ON - When an electrical component conducts current. Varistor - A component terminated across the horn connections to eliminate voltage spikes when the horn is activated.

Volt - The unit of measurement of electromotive force. One volt is the force needed to make one ampere of current flow through one ohm of resistance in a circuit.

Watt - The unit of measurement of power. The amount of power used when one volt pushes on ampere of current though a resistance of one ohm. The result of amperes (current) multiplied by volts (voltage) is watts (power).

Wire - A conductor used to provide a path for current to flow to and from electrical components.

Wiring Diagram - A drawing using visual representation of components the way they actually look. It is used to show the locations of components and the connections between them.

Zener Diode - A special diode used to regulate voltage or as an overvoltage (too high a voltage) protector.